package cn.lh.cn.lh.controller;

import cn.lh.domain.User;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

@RestController
@RequestMapping("order")
public class OrderController {

    @Autowired
    RestTemplate restTemplate;

    @GetMapping("/user/{id}")
    @HystrixCommand(fallbackMethod = "fallback") // 标记方法熔断，fallbackMethod指定的是托底方法名称，当远程服
    public User getUserById(@PathVariable("id") Long id) {
        String url = "http://user-server/user/" + id;
        return restTemplate.getForObject(url, User.class);
    }
    // 降级方法，参数和返回值必须和被熔断的方法一致 ，方法名要和fallbackMethod的值一致
    public User fallback(@PathVariable("id") Long id){
        return new User(-1l, "服务熔断触发", -1);
    }
}
